Structural Health Monitoring (SHM) is an effective alternative to conventional inspections
which are time-consuming and subjective. SHM can detect damage early and reduce
maintenance cost and thereby help reduce the likelihood of catastrophic structural events to
infrastructure such as bridges. After reviewing the Damage Index Method, an Iterative
Damage Index Method (IDIM) is proposed to improve the accuracy of damage detection.
These two damage detection techniques are compared numerically and experimentally using
measurements from two structures, a simply supported beam and a pedestrian bridge. The
dynamic properties for the numerical comparison are extracted by modal analysis in
ABAQUS, while the dynamic characteristics for the experimental comparison are obtained
with the Wireless Sensor Network and the Time Domain Decomposition. In both the
numerical and experimental phases, the accuracy of damage predictions from each method is
quantified. Compared to the traditional damage detection algorithm, the proposed IDIM is
shown to be less arbitrary and more accurate when applied to both structures. The proposed
IDIM has the potential to improve SHM.
| Identifer | oai:union.ndltd.org:tamu.edu/oai:repository.tamu.edu:1969.1/ETD-TAMU-2009-12-7501 |
| Date | 2009 December 1900 |
| Creators | You, Taesun |
| Contributors | Gardoni, Paolo, Hurlebaus, Stefan |
| Source Sets | Texas A and M University |
| Language | en_US |
| Detected Language | English |
| Type | Book, Thesis, Electronic Thesis, text |
| Format | application/pdf |
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